Geophysics
- Lithogen IceProfiler Training for IceMap users
Tutorial video for my customers showing how to use the Sensoft Spidar GPR system for IceProfiling, assuming you're already familiar with the IceMap. (Shameless self promotion)
- Resource: SEG Australia Equipment Manuals Library
Whenever I dig up an old manual, I contribute to their very useful collection. If you have anything old manuals for old geophysical equipment, send them a note!
- Playing with my brand new EM38-4 in the park, finding old building foundations
With apologies for the colour scheme (I'm so sorry if you're colour blind!). This is the lower layer of a two layer 1D inversion model, interpolated. Was playing with maximizing the contrast to try to find the foundation of the Richardson Mansion that existed on this property prior to it being bulldozed in the 70s and donated to the City of Winnipeg to become Munson Park. I'm pretty sure I captured it in the red square in the middle.
- What is my purpose?
This is my EM34-3XL. Have you ever used one? What was your target? How many years/decades ago was it? ;)
- What Lies Beneath the Vatican of the Zapotecs? | NYTwww.nytimes.com What Lies Beneath the Vatican of the Zapotecs?
An archaeological expedition in Mexico seeks what’s left of the sprawling, centuries-old catacombs hidden below the ruins of Mitla.
- Postdoctoral position in Engineering Geology (DCIP Inversion) | Lund, Swedenlu.varbi.com Postdoctoral position in Engineering Geology
Description of the workplace At the division of Engineering Geology, we work with education and research focussed on methods for assessing properties of geological materials, groundwater and civil eng
- [OC] LithogenStreetTest - Spidar Multi antenna GPR and custom cart
Shameless OC. This is my video of a test I did for an R&D project -- the custom cart and GPR rig.
- XKCD: 2840 "Earth Layers"
> "The Earth's magnetic field is primarily generated by currents in the liquid outer core, though some geophysicists argue that an unexplained mismatch with models suggests that the Kinder toy contains a magnet."
- Deciding to dig | CBC
Tl;dr: Pine Creek, MB investigates GPR anomalies at residential school, finding interesting things but no bodies so far.
- Mesa3 Geode EM31 Bluetooth Configuration Tutorial
I make little tutorial vidoes for my rental customers. Maybe it's useful to someone :)
- Aurora Geosciences | Senior Project Geophysicist (Yellowknife, Canada)
This literally used to be my job -- so please ask if you have questions.
- Job posting: Chief Geophysicist -- Axiom Exploration (Saskatoon, Canada)axiomex.com Page not found - Axiom Group
Mining | Minerals | Metals | Exploration Services | Geophysics | Environment
- Laboratory investigation of high-frequency electromagnetic induction measurements for macro-scale relaxation signaturesacademic.oup.com Laboratory investigation of high-frequency electromagnetic induction measurements for macro-scale relaxation signatures
SUMMARY. Direct contact, frequency-dependent, electrical relaxation effects in soils are well documented in both conductivity and dielectric permittivity-d
- XKCD 2810: How to coil a cable
If anyone has any geophysical cable horror stories, fire away!
> The ideal mix for maximum competitive cable-coiling energy is one A/V tech, one rock climber, one sailor, and one topologist.
https://xkcd.com/2810/
- There is a ‘gravity hole’ in the Indian Ocean, and scientists now think they know why | CNNedition.cnn.com There is a ‘gravity hole’ in the Indian Ocean, and scientists now think they know why | CNN
An anomaly known as the geoid low has long puzzled geologists. One team has found what it believes is a credible explanation, and it’s coming from deep inside Earth.
- Spaceweather.gc.ca -- a resource for planning your mag surveys around solar stormswww.spaceweather.gc.ca Zonal review and forecast
Latest magnetic activity forecast produced by the Canadian Space Weather Forecast Service
- ResIPy: Modeling and Inversion of Electrical Resistivity andInduced Polarization Measurements
One of my ABEM rental customers said they were using this and quite liked it! Anyone used it before?
- Geophysical Equipment Porn
It's not geophysics unless it runs on batteries and has wires sticking out...
- A geophysicist was working on their computer at home. Their partner asks: "Honey, our new neighbor is making a lot of noises. Can you do something about it?”
The geophysicist replied without lifting their head up: “Noises? No problem. I got tons of filters here. What’s the frequency?”
- [OC] Abandoned Arctic Geophysical Observatory, Prince Patrick Island
Site was being scrubbed from the planet when I was last there -- might not exist at all now.
- Astrophysics and stale beer: What life is like working at the South Polewww.salon.com Astrophysics and stale beer: What life is like working at the South Pole
Those who live at the South Pole approach the ice with a sense of awe that borders on religious conviction
- Sinking seamount offers clues to slow motion earthquakesphys.org Sinking seamount offers clues to slow motion earthquakes
Scientists have long puzzled over what happens when seamounts—mountains and volcanoes on the seafloor—are pulled into subduction zones. Now, new research from The University of Texas at Austin shows that when seamounts sink, they leave behind a trail of soft sediments. The researchers think the sedi...
- How earthquakes impact hospitals: Insights from the 2023 Turkey earthquake sequencesphys.org How earthquakes impact hospitals: Insights from the 2023 Turkey earthquake sequences
On the morning of February 6, 2023, a very strong earthquake with a magnitude of 7.8 hit an area in south central Turkey and northwestern Syria. About nine hours later, another powerful earthquake measuring 7.5 struck a nearby region called Kahramanmaraş Province. Both events led to the severe destr...
- XKCD: Seismic Waves
"The USGS operates a really neat email/SMS earthquake notification service (earthquake.usgs.gov/ens/) that allows fine-grained control of notifications."
- Rampant groundwater pumping has changed the tilt of Earth’s axiswww.nature.com Rampant groundwater pumping has changed the tilt of Earth’s axis
Human depletion of underground reservoirs has shifted the global distribution of water so much that the North Pole has drifted by more more than 4 centimetres per year.
Not alarmist, just cool. When I was in grad school we studied we used dInSAR to study groundwater pumping related subsidence. It makes perfect sense that there would be mass redistribution.
- On the Origin and Evolution of the Material in 67P/Churyumov-Gerasimenko - Space Science Reviewslink.springer.com On the Origin and Evolution of the Material in 67P/Churyumov-Gerasimenko - Space Science Reviews
Primitive objects like comets hold important information on the material that formed our solar system. Several comets have been visited by spacecraft and many more have been observed through Earth- and space-based telescopes. Still our understanding remains limited. Molecular abundances in comets ha...
This thesis just won a major prize from the Royal Astronomical Society. https://ras.ac.uk/news-and-press/news/2022-thesis-prize-winners-announced
- Geoforensic search to crime scene: Remote sensing, geophysics, and dogs
Abstract
> In the absence of surface indications of burial sites, law enforcement or humanitarian organizations are faced with the difficult task of focusing large-scale ground searches to a manageable excavation area. A geoforensic-based survey may exclude parts of the landscape for reasons such as diggability or viewshed analysis but leave areas still too large for invasive exploration. This work examines how drone-based remote sensing, geophysics, and search dogs may be combined to narrow such searches. Here, we ask the reader to consider two examples where forensic geomorphology and land use provided a range of possible burial locations. Following this is a multi-proxy approach to similar dilemma, with a search-to-scene case study using remote sensing (drone photography), geophysics, ground probes, and search dogs. This approach is not presented as a definitive guide, but serves as an example of the conjunctive use of well-studied methods to approach a common problem in geoforensics.
